Disposable Electrode Fluid Testing System for Hazardous Material Elimination
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Solution Overview
Problem
Fluid testing systems require significant maintenance and operational costs, and often use hazardous materials like Hg, necessitating frequent replacement of electrodes and on-site technician involvement.
Innovation Solution
A fluid testing system with a housing, inlet, and outlet that includes a testing chamber, a wire feed system for new electrodes, and a control system to direct fluid and electrodes for each test cycle, allowing for remote operation and eliminating the need for hazardous materials by using electrodes made of non-toxic materials like Au, Bi, and Graphene/Graphite.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional fluid testing systems use Hg and hazardous materials to monitor contaminants, then measurement capability is achieved, but safety and environmental harm deteriorate
Solution Approach 1:
The patent employs disposable screen-printed electrodes with integrated reagents that are discarded after single use, eliminating the need for hazardous materials like Hg while maintaining measurement capability. These electrodes contain pre-loaded reagent layers that react with contaminants, providing accurate detection without requiring dangerous substances to be stored or handled repeatedly.
Solution Approach 2:
The invention transitions from electrochemical methods using hazardous materials (Hg) to optical detection methods using colorimetric or fluorometric reagents embedded in the electrode structure. This parameter change in detection mechanism allows contaminant measurement without the harmful effects of toxic materials, achieving both measurement precision and safety.
2Measurement precision
If electrodes are frequently replaced to maintain testing accuracy, then measurement precision is improved, but maintenance costs and operational complexity worsen
Solution Approach 1:
The patent combines the electrode structure with integrated reagent layers and reference materials into a single disposable unit. This merging eliminates the need for separate electrode replacement and reagent refilling operations, reducing maintenance complexity while ensuring measurement precision through factory-prepared consistent reagent amounts.
Solution Approach 2:
By using inexpensive disposable electrodes with embedded reagents, the system eliminates the need for frequent maintenance of expensive reusable electrodes. Each disposable unit is pre-calibrated and ready to use, reducing both maintenance costs and operational complexity while maintaining measurement accuracy.
3Ease of operation
If on-site technician involvement is required for fluid testing, then operational control is improved, but operational costs and time consumption worsen
Solution Approach 1:
The patent implements automated sampling, injection, and data analysis capabilities that allow the system to perform testing operations independently without on-site technician intervention. The automated platform includes robotic liquid handling, programmable injection sequences, and integrated data processing, enabling unattended operation while maintaining ease of use through remote monitoring interfaces.
4Reliability
If maintenance and replacement of electrodes is required regularly, then reliability is improved, but loss of time and productivity worsen
Solution Approach 1:
The use of disposable electrodes with integrated reagents eliminates the time-consuming processes of electrode cleaning, conditioning, and calibration that are required for reusable electrodes. Each disposable unit is pre-prepared and can be quickly exchanged, maintaining system reliability while minimizing maintenance downtime and maximizing productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces operational costs and eliminates the need for on-site personnel, while accurately detecting contaminants like Pb, As, Cd, and Cr down to low concentrations without using hazardous materials, ensuring safer and more frequent testing.
Implementation Method 1
The control system applies an electric signal to one electrode and samples the results on another so as to determine the presence of selected contaminants in the fluid in the at least one testing chamber
Implementation Method 2
performs a first measurement by application of an electric signal to the first electrode, determines a first measurement indicative of the presence of a selected contaminant in at least one testing chamber by evaluating a signal received on a second electrode
Data Source
AI summary
A fluid testing system can be used to measure the levels of contaminants in a fluid system. The system can utilize anodic stripping voltammetry or some other chemical, electrical, or electrochemical process to measure the contaminant levels. Wire electrodes may be used to facilitate the tests. Unused portions of the electrode wires can be fed into the test chambers between tests to ensure clean and reliable electrodes for subsequent testing.